Hi everyone, been using my iPhone 6 since friday and have some battery usage behaviour that I can't quite figure out. When I look at the per app usage I see things like Facebook, Skype and Youtube using up between 10-20% of my battery with "Background Activity". I have disabled background app refresh completely, but they still use up a lot of battery. Even though I barely use them. And last night I lost 15% battery in 7 hours. (While I was asleep) Anyone else experiencing this?